CN106979160A - Helical-lobe compressor, air-conditioning device and refrigerating plant - Google Patents
Helical-lobe compressor, air-conditioning device and refrigerating plant Download PDFInfo
- Publication number
- CN106979160A CN106979160A CN201710283983.8A CN201710283983A CN106979160A CN 106979160 A CN106979160 A CN 106979160A CN 201710283983 A CN201710283983 A CN 201710283983A CN 106979160 A CN106979160 A CN 106979160A
- Authority
- CN
- China
- Prior art keywords
- tonifying
- axial
- helical
- hole
- lobe compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2250/00—Geometry
- F04C2250/10—Geometry of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2250/00—Geometry
- F04C2250/10—Geometry of the inlet or outlet
- F04C2250/101—Geometry of the inlet or outlet of the inlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The present invention provides a kind of helical-lobe compressor, air-conditioning device and refrigerating plant.Helical-lobe compressor includes setting air supply passage on body, body, and air supply passage has at least two axial tonifying Qi holes for being used to connect with compression chamber.The helical-lobe compressor that the present invention is provided, the quantity in axial tonifying Qi hole that its air supply passage is used to connect with compression chamber is at least two, and in the case of so can be used in setting the space in axial tonifying Qi hole limited on body, the aperture in each axial tonifying Qi hole is smaller；During tonifying Qi, the larger axial tonifying Qi hole in middle aperture compared with prior art, in the helical-lobe compressor that the present invention is provided, quantity is more and the less axial tonifying Qi hole in aperture is more beneficial for reducing gas, so as to help to reduce the noise during tonifying Qi.
Description
Technical field
The present invention relates to Compressor Technology field, in particular it relates to a kind of helical-lobe compressor, using the helical-lobe compressor
Air-conditioning device and the refrigerating plant using the helical-lobe compressor.
Background technology
Helical-lobe compressor generally includes body and a pair of parallel and intermeshing yin, yang screw rod being arranged in body,
It is provided with the corresponding body in yin, yang screw rod one end on air inlet, the corresponding body of the other end and is provided with exhaust outlet.Above-mentioned spiral shell
Bar compressor is high by the low temperature low pressure gas boil down to of the air inlet entrance from body by the rotation reversely with each other of yin, yang screw rod
Warm gases at high pressure, and discharged from the exhaust outlet of body.
Air supply passage is further typically provided with the body of existing helical-lobe compressor, the air supply passage is used for yin, yang spiral shell
Make-up gas in compression chamber between bar, the compression efficiency to improve helical-lobe compressor.
The set-up mode of existing air supply passage can be divided into two kinds of axial tonifying Qi and radial direction tonifying Qi.For axial tonifying Qi,
In existing helical-lobe compressor, as shown in figure 1, the compression being used between yin, yang screw rod of the air supply passage set on body 10 '
The quantity in the axial tonifying Qi hole 201 ' of chamber connection is one, meanwhile, its aperture is relatively large.With above-mentioned air supply passage structure
Helical-lobe compressor, when the gas in air supply passage enters the compression chamber of yin, yang screw rod by axial tonifying Qi hole 201 ', can make
Into larger gas, so as to cause the noise produced larger.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art, it is proposed that a kind of helical-lobe compressor,
Air-conditioning device and refrigerating plant, gas is larger during it can improve the tonifying Qi that above-mentioned prior art is present, and causes to make an uproar
The problem of sound is larger.
To realize that the purpose of the present invention provides a kind of helical-lobe compressor, it includes setting tonifying Qi on body, the body
Passage, the air supply passage has at least two axial tonifying Qi holes for being used to connect with compression chamber.
Helical-lobe compressor as described above, these, it is preferred to, the maximum of each axial tonifying Qi bore dia is not
More than 6mm.
Helical-lobe compressor as described above, these, it is preferred to, the axial tonifying Qi hole is circle, and each axle
It is not less than 2mm to the diameter in tonifying Qi hole.
Helical-lobe compressor as described above, these, it is preferred to, a diameter of 5mm in each axial tonifying Qi hole.
Helical-lobe compressor as described above, these, it is preferred to, being shaped as the axial tonifying Qi hole is circular, ellipse,
Any one in round rectangle and polygon.
Helical-lobe compressor as described above, these, it is preferred to, positive screw rod and female screw are provided with the body, it is many
The individual axial tonifying Qi hole is arranged in shape corresponding with the tooth root of the positive screw rod.
Helical-lobe compressor as described above, these, it is preferred to, the air supply passage is arranged on the exhaust shaft of the body
In bearing.
Helical-lobe compressor as described above, these, it is preferred to, described at least two axial tonifying Qi hole is arranged in first
Group, the quantity in axial tonifying Qi hole is at least the center of circle in the axial tonifying Qi holes all in three, first group and formed in first group
Circular arc, the center of circle of circular arc is arranged concentrically with the positive screw rod.
Helical-lobe compressor as described above, these, it is preferred to, the air supply passage by the position of the positive screw rod and
The exhaust passage of the helical-lobe compressor determines the profile of the air supply passage, the circle in the axial tonifying Qi hole of a part of quantity
The heart is fixed value apart from the numerical value of the profile.
To realize that the purpose of the present invention also provides a kind of air-conditioning device, the air-conditioning device includes above-mentioned helical-lobe compressor.
To realize that the purpose of the present invention also provides a kind of refrigerating plant, the refrigerating plant includes above-mentioned helical-lobe compressor.
The invention has the advantages that：
The helical-lobe compressor that the present invention is provided, the quantity in axial tonifying Qi hole that its air supply passage is used to connect with compression chamber is
It is multiple, in the case of so can be used in setting the space in axial tonifying Qi hole limited on body, the hole in each axial direction tonifying Qi hole
Footpath is smaller；During tonifying Qi, the larger axial tonifying Qi hole in middle aperture compared with prior art, the helical-lobe compressor that the present invention is provided
In, quantity is more and the less axial tonifying Qi hole in aperture is more beneficial for reducing gas, so as to help to reduce tonifying Qi process
In noise.
Air-conditioning device and refrigerating plant that the present invention is provided, it uses the above-mentioned helical-lobe compressor that the present invention is provided, and it can
To reduce the gas during tonifying Qi, so as to help to reduce the noise during tonifying Qi.
Brief description of the drawings
Fig. 1 is the schematic diagram in axial tonifying Qi hole in existing helical-lobe compressor；
Fig. 2 is the schematic perspective view in axial tonifying Qi hole in the helical-lobe compressor in embodiment of the present invention；
Fig. 3 is the schematic elevation view in axial tonifying Qi hole in the helical-lobe compressor in embodiment of the present invention.
Fig. 4 is the arrangement schematic diagram in axial tonifying Qi hole in the helical-lobe compressor in embodiment of the present invention.
Description of reference numerals：
10 ', body, 201 ', axial tonifying Qi hole, 10, body, 201, axial tonifying Qi hole；31st, first group；40th, positive screw rod.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
The present invention provides a kind of helical-lobe compressor.In embodiments thereof, as shown in Figures 2 and 3, the helical-lobe compressor
Including body 10, air supply passage is set, the air supply passage has multiple axles for being connected with compression chamber on the body 10
To tonifying Qi hole 201.
In the present embodiment, the quantity in axial tonifying Qi hole 201 that air supply passage is used to connect with compression chamber be it is multiple, this
In the case that sample can be used in setting the space in axial tonifying Qi hole 201 limited on body, the aperture in each axial direction tonifying Qi hole 201
It is smaller.
The principle and the course of work of the helical-lobe compressor provided below in conjunction with the accompanying drawings the present invention are described in detail.
So that helical-lobe compressor is double-screw compressor as an example, specifically, helical-lobe compressor also includes a pair of parallel and mutual
The positive screw rod and female screw of engagement, and drive mechanism.The drive mechanism is connected with positive screw rod, for driving the positive screw rod
Rotate, and then drive the female screw engaged with positive screw rod to rotate.One end of body 10 is provided with air inlet, and the other end is provided with row
Gas port, and air inlet and exhaust outlet are located at the both sides of the yin, yang screw rod respectively.
When helical-lobe compressor works, under the drive of drive mechanism, positive screw rod and female screw rotation reversely with each other,
When compression chamber between yin, yang screw rod is connected with air inlet, the compression chamber that gas is entered between yin, yang screw rod by air inlet
It is interior, after compression process, when compression chamber is connected with exhaust outlet, from exhaust outlet discharge.
In above process, when compression chamber is connected with axial tonifying Qi hole 201, supplemented by air supply passage into compression chamber
Gas, the compression efficiency to improve helical-lobe compressor.When the gas in air supply passage is by air supply passage, air supply passage warp
The gas flow crossed is fixed value, so the total value that multiple axial tonifying Qi holes 201 pass through gas flow is fixed value, due to axial tonifying Qi
The quantity in hole 201 is multiple, so in the case where total value is constant, the aperture in each axial direction tonifying Qi hole 201 is relatively small, gas
It is smaller by the gas produced by axial tonifying Qi hole 201, so as to reduce the noise formed during the tonifying Qi into compression chamber.
Above-mentioned principle and process so that helical-lobe compressor is double-screw compressor as an example to the present invention is described in detail,
But it should be recognized that the helical-lobe compressor that the present invention is provided can also be other possible structures, however it is not limited to above-mentioned pair of spiral shell
Bar compressor.
In the present embodiment, the shape in each axial tonifying Qi hole 201 can for circle, ellipse, round rectangle,
The various regular shapes such as polygon, can also be other various irregular shapes.In actual applications, can as needed by
Gas supplementing opening 201 is shaped to any required or can reach the shape of corresponding purpose.
Preferably, the no more than 6mm of the maximum of each axial diameter of tonifying Qi hole 201；So set and define axle
To the maximum length in the aperture of tonifying Qi hole 201, it is limited within the scope of 6mm, can preferably reduces the gas during tonifying Qi
Stream pulsation, so as to realize noise lower.
Further, the axial tonifying Qi hole 201 is circle, and each the diameter in the axial tonifying Qi hole 201 is not less than
2mm.Axial tonifying Qi hole 201 is shaped to circle, it is easy to processing, so as to reduce processing cost.Such as Fig. 3 institutes
Show, a diameter of 5mm in each axial tonifying Qi hole 201.
Preferably, be provided with positive screw rod and female screw in the body 10, multiple axial tonifying Qi holes 201 be arranged in
The corresponding shape of tooth root of the positive screw rod.The gas during tonifying Qi can be reduced by so setting, so as to contribute to drop
Noise during low tonifying Qi.
In the present embodiment, the air supply passage can be arranged on the exhaust bearing block of the body 10, in Fig. 2 and
Housing construction shown in Fig. 3 is exactly to be vented bearing block.
The helical-lobe compressor that present embodiment is provided, its air supply passage is used for the axial tonifying Qi hole 201 connected with compression chamber
Quantity to be multiple, in the case of so can be used in setting the space in axial tonifying Qi hole 201 limited on body 10, each axle
Aperture to tonifying Qi hole 201 is smaller；During tonifying Qi, the larger axial tonifying Qi hole in middle aperture, of the invention compared with prior art
In the helical-lobe compressor of offer, quantity is more and the less axial tonifying Qi hole 201 in aperture is more beneficial for reducing gas, so that
Help to reduce the noise during tonifying Qi.
As shown in figure 4, at least two axial tonifying Qi hole 201 is arranged in first group 31, first group 31 axial tonifying Qi hole
201 quantity be at least axial tonifying Qi holes 201 all in three, first group 31 the center of circle formed circular arc, the center of circle of circular arc with
Positive screw rod 40 is arranged concentrically, and 31 position is exactly the circle of first group 31 of multiple axial center of circle arrangement forms of tonifying Qi hole 201 in Fig. 4
Arc.
Air supply passage determines the profile B of air supply passage, one by the position of positive screw rod and the exhaust passage of helical-lobe compressor
The circle center distance profile B in the axial tonifying Qi hole 201 of partial amt numerical value is fixed value.In the exhaust passage of helical-lobe compressor and
On the premise of positive screw rod is fixed, profile B shape is fixed, that is to say, that profile B shape is also original air supply passage
Shape of cross section.
Present invention also offers a kind of air-conditioning device, in this embodiment, it is above-mentioned that the air-conditioning device includes the present invention
Helical-lobe compressor in embodiment.
The air-conditioning device that the present invention is provided, it uses the above-mentioned helical-lobe compressor that the present invention is provided, and it can reduce tonifying Qi
During gas so that contribute to reduce tonifying Qi during noise.
Present invention also offers a kind of refrigerating plant, in this embodiment, it is above-mentioned that the refrigerating plant includes the present invention
Helical-lobe compressor in embodiment.
The refrigerating plant that the present invention is provided, it uses the above-mentioned helical-lobe compressor that the present invention is provided, and it can reduce tonifying Qi
During gas so that contribute to reduce tonifying Qi during noise.
Construction, feature and the action effect of the present invention, above institute is described in detail according to the embodiment shown in schema above
Only presently preferred embodiments of the present invention is stated, but the present invention is not to limit practical range shown in drawing, it is every according to structure of the invention
Want made change, or be revised as the equivalent embodiment of equivalent variations, still without departing from specification with illustrating during covered spirit,
All should be within the scope of the present invention.
Claims (11)
1. air supply passage is set on a kind of helical-lobe compressor, including body (10), the body (10), it is characterised in that described
Air supply passage has at least two axial tonifying Qi holes (201) for being used to connect with compression chamber.
2. helical-lobe compressor according to claim 1, it is characterised in that the diameter of each axial tonifying Qi hole (201)
The no more than 6mm of maximum.
3. helical-lobe compressor according to claim 1, it is characterised in that the axial tonifying Qi hole (201) is circle, and often
The diameter of the individual axial tonifying Qi hole (201) is not less than 2mm.
4. helical-lobe compressor according to claim 3, it is characterised in that the diameter of each axial tonifying Qi hole (201)
For 5mm.
5. helical-lobe compressor according to claim 1, it is characterised in that the axial tonifying Qi hole (201) is shaped as circle
Any one in shape, ellipse, round rectangle and polygon.
6. the helical-lobe compressor according to Claims 1 to 5 any one, it is characterised in that set in the body (10)
There are positive screw rod (40) and a female screw, multiple axial tonifying Qi holes (201) are arranged in shape corresponding with the positive screw rod (40).
7. helical-lobe compressor according to claim 6, it is characterised in that described at least two axial tonifying Qi hole (201)
It is arranged in first group (31), the quantity of axial tonifying Qi hole (201), which is at least in three, first group (31), in first group (31) owns
The axial tonifying Qi hole (201) the center of circle formed circular arc, the center of circle of circular arc is arranged concentrically with the positive screw rod (40).
8. helical-lobe compressor according to claim 6, it is characterised in that the position that the air supply passage passes through the positive screw rod
The exhaust passage put with the helical-lobe compressor determines the profile of the air supply passage, the axial tonifying Qi hole of a part of quantity
(201) numerical value of profile described in circle center distance is fixed value.
9. helical-lobe compressor according to claim 1, it is characterised in that the air supply passage is arranged on the body (10)
Exhaust bearing block on.
10. a kind of air-conditioning device, it is characterised in that the air-conditioning device includes the screw rod described in claim 1~9 any one
Compressor.
11. a kind of refrigerating plant, it is characterised in that the refrigerating plant includes the screw rod described in claim 1~9 any one
Compressor.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710283983.8A CN106979160A (en) | 2017-04-26 | 2017-04-26 | Helical-lobe compressor, air-conditioning device and refrigerating plant |
| PCT/CN2017/119427 WO2018196427A1 (en) | 2017-04-26 | 2017-12-28 | Screw compressor, air conditioning device and refrigerating device |
| EP17907068.5A EP3617516B1 (en) | 2017-04-26 | 2017-12-28 | Screw compressor, air conditioning device and refrigerating device |
| US16/608,763 US20200049148A1 (en) | 2017-04-26 | 2017-12-28 | Screw Compressor, Air Conditioning Apparatus and Refrigeration Apparatus |
| PH12019502419A PH12019502419A1 (en) | 2017-04-26 | 2019-10-25 | Screw compressor, air conditioning apparatus and refrigeration apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710283983.8A CN106979160A (en) | 2017-04-26 | 2017-04-26 | Helical-lobe compressor, air-conditioning device and refrigerating plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106979160A true CN106979160A (en) | 2017-07-25 |
Family
ID=59341594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710283983.8A Pending CN106979160A (en) | 2017-04-26 | 2017-04-26 | Helical-lobe compressor, air-conditioning device and refrigerating plant |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20200049148A1 (en) |
| EP (1) | EP3617516B1 (en) |
| CN (1) | CN106979160A (en) |
| PH (1) | PH12019502419A1 (en) |
| WO (1) | WO2018196427A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018196427A1 (en) * | 2017-04-26 | 2018-11-01 | 格力电器（武汉）有限公司 | Screw compressor, air conditioning device and refrigerating device |
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| CN204962009U (en) * | 2015-09-01 | 2016-01-13 | 奇瑞汽车股份有限公司 | Novel vehicle air conditioner rectifying valve |
| CN105736377A (en) * | 2016-04-11 | 2016-07-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor structure |
| CN206889265U (en) * | 2017-04-26 | 2018-01-16 | 珠海格力电器股份有限公司 | Helical-lobe compressor, air-conditioning device and refrigerating plant |
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| CN106979160A (en) * | 2017-04-26 | 2017-07-25 | 珠海格力电器股份有限公司 | Helical-lobe compressor, air-conditioning device and refrigerating plant |
-
2017
- 2017-04-26 CN CN201710283983.8A patent/CN106979160A/en active Pending
- 2017-12-28 EP EP17907068.5A patent/EP3617516B1/en active Active
- 2017-12-28 US US16/608,763 patent/US20200049148A1/en not_active Abandoned
- 2017-12-28 WO PCT/CN2017/119427 patent/WO2018196427A1/en unknown
-
2019
- 2019-10-25 PH PH12019502419A patent/PH12019502419A1/en unknown
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| JPH06280598A (en) * | 1993-03-24 | 1994-10-04 | Honda Motor Co Ltd | Measuring device for supercharging pressure |
| CN101979880A (en) * | 2010-04-26 | 2011-02-23 | 上海维尔泰克螺杆机械有限公司 | Screw compressor |
| CN204962009U (en) * | 2015-09-01 | 2016-01-13 | 奇瑞汽车股份有限公司 | Novel vehicle air conditioner rectifying valve |
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| WO2018196427A1 (en) * | 2017-04-26 | 2018-11-01 | 格力电器（武汉）有限公司 | Screw compressor, air conditioning device and refrigerating device |
Also Published As
| Publication number | Publication date |
|---|---|
| US20200049148A1 (en) | 2020-02-13 |
| EP3617516B1 (en) | 2021-10-06 |
| EP3617516A1 (en) | 2020-03-04 |
| EP3617516A4 (en) | 2020-03-04 |
| WO2018196427A1 (en) | 2018-11-01 |
| PH12019502419A1 (en) | 2020-07-06 |
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Application publication date: 20170725 |